Mold



April 25 1933- c. T. cAHlLL 1,905,897

MOLD

Filed July 25, 1930 dai'iiecg Patented Apr. 25, 1933 UNITED STATES PATENT or-FlciA Appuoaaon mea my as, 1930. serial No. 470,598.

My presnt invention relates to molds, and

more articularly to a novel and improved mold or use in the manufacture of the novel building unitl illustrated, described and claimed in my co-pending application, Se-

rial No. 470,597 filed July 25, 1930.

An important object of the present invention is the provision of a mold havin collapsible sides and ends whereby the bui ding lo unit constructed therein may be easily removed on its completion.

Another object of the invention is the provision of adjustable-supportin devices to support the core of said buil ing unit in l5 the mold.

A still further feature of the invention resides in providing said mold with means whereby the mold may be adjusted as the cement or concrete is poured into the mold .20 around the core and form.

Another feature of the invention resides in the provision of novel removable cores, adapted to cooperate with the frame or core of the block to produce desired channels or apertures completely through said block.

Another object of the invention resides in providing said removable cores with pivotal mounted latch members which will form lifting recesses in the blocks during the process of manufacture, but which latches may be readily moved to housed position within the core to permit the removal of said cores from the mold for completion of the building unit. Y

The above and other objects and features of the invention, combinations of parts, details of construction and advantages, will be hereinafter more fully pointed out, de-

scribed and claimed.

Referring tothe drawing illustrating a preferred embodiment of the present invention,

. Fig. 1 is a perspective view of my novel 5/ mold in assembled position;

Fig. 2 is a vertical sectional view on the line 2--2 of Fig. 1;

Fig. 3 is a vertical sectional View on the line 3-3 of Fig. 1 with the box-like core anfdreenforcing members supported in said mo Fig. *4 is a perspective view of the removable cores; and

Fig. 5 is a fragmentary cross sectional view on the line 5-5 of Fig. 1.

Referring now to the drawing, for a particular description of the invention, its construction, assembly and operation, 1 desi nates the base of my novel mold, which 1s secured to handle members 2 by means of e0 nails 3, or the like, said handle members being supported on cross braces or supports 4, to space the mold from the surface on which it rests.

. Sides 5 and 6 are hinged to the base 1 by 65 hinges 7, and the ends 8 are hinged to the base 1 by hinges 9. The sides 5 and 6 carry pms 10 adapted to be engaged by latch members or hooks 11 pivoted to the ends 8 on pins 12. The side 6 is provided with a pair 70 of apertures \13, here illustrated as two in number, although any desired number of these apertures 13 may be provided. Also,

kwhile the apertures 13 are illustrated as Adapated to be inserted through the apertures 13 are cores 18 having a rounded cross sectional shape, the end 19 of each of said cores being adapted to seat in one of the recesses 14, so that said cores will be supported at each end. 9o

A channel 20 is provided partially through each core 18, an a pivot pin 21 extends transversely through the core, traversing said channel. Pivotally mounted on the pin 21 is a lever 22, one end of said lever being formed as a latch 23 normally projecting above the surface of the core 18. The other end 24 of said lever 22 projects at one side of the handle 25 of said core. A pressure on the projecting end 24 of the lever 22 will, therefore, depress the latch 23 until the same is housed within the core 18.

The novel building unit illustrated, described and claimed 1n my co-pending application, Serial No. 470,597 has as a part thereof a wooden box-like frame or core 26, to which are ahxed metallic straps 27, and fixed in turn to these straps 27 are wire screens or meshes 28. The box 26, of course, may be of a material other than wood, such as fibre, or the like, if desired.

When it is desired to construct my novel building unit, the frame, comprising the box 26, straps 27 and reenforcing meshes 28, is placed within the mold, being supported by the supporting elements 16 which depend from the adjustable supporting members 15. This will space said framework a Suitable distance above the bottom 1 of the mold, as well as from the inner surfaces of the sides and ends of the molds.

upper edges of the walls 5 and 6 to any predetermined location desired for best su port of the building unit frame. When the rame is thus suspended within the mold, the cores 18 are inserted through the apertures 13, and through the passa es or channels formed in the box 26 by t e walls 29, reenforcing screens or meshes 30 being provided in said channels if desired.

With the mold and frame assembled as in Fig. 3, the latch members 23 will project from the cores 18.

The device is now ready for the application of the cement or concrete, which will be poured into the mold, the mold to be agitated by means of the handle members 2 to insure complete filling of the mold by said cement or concrete. Other means or methods to insure complete fillin of the mold may be utilized, such as tamplng or the like.

When the said concrete has hardened about its frame to the desired condition, the

latches 23 will have formed recesses in the completed block to receive lifting hooks or other lifting dev'ces, and may then be withdrawn by press re on the ends24 of the levers 22, whereupon the cores 18 may be readily removed from the block. Thereupon the supports 15 and the supporting elements 16 may be removed, the latches 11 released from the ins 10, and the sides and ends of the mol may be collapsed by means of the hinges 7 and 9. 1

The supportingA arms or braces 15 may be slid along the,

When the block has been removed from 4the base 1, the mold may be again assembled vsame in the present application.

The advantages and merits of my novel mold will be instantly apparent to and understood b those skilled in this art.

While have necessarily described my resent invention somewhat in detail it will e appreciated that I may vary the size, shape, land arrangement of parts within reasonably wide limlts without departing-from the spirit of the invention.

My invention is further described and defined in the form of claims as follows:

1. A mold of the kind described, comprising a bottom, sides and ends hinged to said bottom, means to hold said sides and ends in closed position, one of said sides having a plurality of apertures therethrough, the other of said sides, on its inner surface, being provided with recesses alined with said apertures, removable cores adapted to be inserted through said apertures and to be supported in said recesses and said apertures, a handle on each of said cores externally of said mold, a latch pivoted in each of said cores adapted to form lifting recesses in a block during the formation of said block in said mold, and means located in said handle to release said latches to permit withdrawal of said cores.

2. A mold of the kind described, comprising a bottom, sides and ends hinged to said bottom, means to hold said sides and ends in closed position, one of said sides havin a plurality of apertures therethrough,

other of said sides, on its inner surface, being providedv with recesses alined with said apertures, removable cores adapted to be inserted through said apertures and to be supported in said recesses and said apertures, a handle on each of said cores externally of said mold, a latch pivoted in each of said cores adapted to form lifting recesses in a block during the formation of said block in said mold, means locatedI in said handle to release said latches to permit withdrawaly of said cores and a plurality of supporting members slidably mounted on the upper edges of said sides.

3. A mold of the kind described, comprising a bottom, sides and ends hinged to said bottom, means to hold said sides and ends in closed position, one of said sides having a plurality. of apertures therethrough, the other of said sides, on its inner surface, be-

ing provided with recesses alined with said apertures, removable cores adapted to be inserted through said apertures and to be lsupported in said recesses and said apertures, a handle on each of said cores externally of said mold, a latch ivoted in each of said cores adapted to formllifting recesses in a block during the formation of said block in said mold, means located in said handle to release said latches to permit withdrawal of said cores, a plurality of supporting members slidably mounted on the upper edges of said sides, and a su porting pin associated with each of said) supportm members and fixed at oneend thereto, an holding means formed on the free end of each of said pins.

In testimony whereof, I have signed my name to this specification.

CHAS. T. CAHILL. 

